diff --git a/cmake/morpheus_add_target.cmake b/cmake/morpheus_add_target.cmake
index fe1e4a40..515bfc02 100644
--- a/cmake/morpheus_add_target.cmake
+++ b/cmake/morpheus_add_target.cmake
@@ -77,7 +77,7 @@ function(morpheus_add_target)
     if (NOT MORPHEUS_ALIAS AND MORPHEUS_TYPE STREQUAL library)
         message(FATAL_ERROR "ALIAS parameter must be supplied for library targets")
     endif()
-    if (NOT MORPHEUS_INTERFACE AND NOT MORPHEUS_TYPE STREQUAL library)
+    if (MORPHEUS_INTERFACE AND NOT MORPHEUS_TYPE STREQUAL library)
         message(FATAL_ERROR "INTERFACE parameter can only be used with library targets")
     endif()
     if(${MORPHEUS_INTERFACE})